docs: comment graphic settings

inst/templates/setup.R

@@ -10,10 +10,13 @@ options(readr.show_col_types = FALSE)
 knitr::opts_chunk$set(
     collapse = TRUE,
     comment = "#>",
-    fig.width = 6,        # Graphic settings from https://r4ds.had.co.nz/graphics-for-communication.html?q=fig.asp#figure-sizing
+    # >>> Graphic settings
+    # from https://r4ds.had.co.nz/graphics-for-communication.html?q=fig.asp#figure-sizing
+    fig.width = 6,
     fig.asp = 0.618,
     out.width = "70%",
     fig.align = "center",
+    # <<< Graphic settings
     echo = FALSE,
     warning = FALSE,
     message = FALSE,